Interleaving device



May 3,1927.

F. H. SHINN INTERLEAVING DEVICE 4 Sheet-Sheet 1 Filed June 28, 1926 E H. SH/NA} [NVENTOR I -4 IE-5 May 3,1927. 1,627,417

F. H. SHINN INTERLEAVING DEVICE Filed June 28, 1926 4 Sheets-Sheet 2 5 F. SH/NN INVENTOR A TTORNEY May 3,1927. 1,627,417

F. H. SHINN INTERLEAVING DEVI CE Filed June 28, 1926 4 Sheets-Sheet 3 f. H. SHZNN 11v VENTOR BYWM A TTORNEY 1927. May F. H. SHINN INTERLEAVING DEVICE Filed June 28, 1926 4 Sheets-Sheet 4 I I!vllltiid llllillldlllll [N VEN-TOA A TTORNEY Patented May 3, 1927.

UNITED-STATES PATENT, OFFICE.

FRANK H. SHINN, OI DAVENPORT, IOWA."

IN'IERLEAVING DEVICE.

My invention pertainsto machines or attachments for use in cOnJunction with duplieating machines, such as inimeographs, neostyles, printing presses, etc. in which it 1s\ 1ng mechanism,

necessary or desirable to place an ink absorbing sheet between each printed sheet and the nextsucceeding sheet in order to prevent ofli'setting of the printed matter from the face of one sheet to the back of the next of these sheets with the printed sheets as they are delivered from the printing mechanism; to provide improved releasing mechanism for the interleaving sheets; to'provide means whereby the interleaving mechanism may be functionally disconnected from the printing mechanism though physically connected thereto; to provide means for insuring that the interleaving sheets will always assume the proper ositions with respect to each other and to t e printed sheets, when inserted between those sheets; to provide means for assuring that the printed sheets will go to the positions which they are supposed to occupy in the printed stack; to provide desirable means for actuating the releasing mechanism for the interleaving sheets; to provide an improved form of interleaving sheet; to provide means whereby the number of printed sheets may be readily determined from an inspection of the interleaving sheets in the printed stack; to provide a desirable file for the reception and holding of the interleaving sheets; to provide an improved method of interleaving sheets printed by a. printing mechanism; and such further objects, advantages, and capabilities as will hereafter appear and as are inherent in the construction disclosed.

My invention further resides in the com In the drawings annexed hereto and forming a par-thereof Fig. 1 shows in fragmentary elevation a well-known form of printwith one form of my apparatus attached thereto; Fig. 2 shows an endelevation of a slightly'modified form of construction, taken in a direction correspondlng to looking from the right in Fig. 1; Fig. 3 1s a plan view of the right hand port on of the construction shown in Fig. 1, w th the cover plate broken away to show the interior construction; Figs. 4 and 5 are side and end elevations of a portion of the construction SllOWITfil Figs. 1 and 2; Fig.

.6 is a transverse section substantially along I line 66, Fig. 3;

perelement shown in Fig. 1, the same being provided with a ditferentstyle of operating head than that shown in Fig. 8; Fig. 10 is a plan View of a portion of a stack of interleaving sheets; Fig. 11 is a perspective View of the interleaver sheet file; Fig. 12 is a view corresponding to Fig. 1 in which is used-a different style of dropper mechanism and in which the receiving bed or table is entirely or substantially horizontal; Fig. 13 1s a plan of the construction shown in Fig. 12 with the cover plate broken away to show the operating mechanism for the dropper elements; Fig. 14 is a view partly in section and partly in end elevation of the form or my invention which is now considered the preferred embodiment thereof, but with the dropper elements and various other parts omitted, since these are shown clearly in other views; Fig. 15 is a section substantially along the plane indicatedby the line 151 5, Fig. 14, parts being broken away and parts omitted; Fig. 16 is a sectional elevation ofwhat is now considered the preferred form of dropper elements and file; F ig.-17 is a view in elevation of another form of skid, the same being prefei'i'ed,.in some instances, to that shown in Figs. 2, 4 and 5; Fig. 18 is a plan view of an interleaving sheet designed particularly for use when interleaving legal cap paper. Figs. 19 and 20 are plan views of another form of interleaving sheets.

Referring more in detail to the annexed drawings, refe ence. characters P and I is an elevation corresponding to Fig.

represent broadly the printing machine and the interleaver, the latter being shown In the present instance as attached to the former and secured thereto by readily releaseable means to be referred to hcrelnafter. The interleaver comprises a frame 1, dropper elements 2 and 3, operating means 4 there for. and a table 5 for the reception of the printed sheets and the interleaving sheets. The frame comprises side members 6 and 7 and connecting members 8. .In the form shown. the frame is connected to the printing machine by clamps 9 drawn to place by screw threaded means 10. It will of course be understood that if this frame is to be attached to a printing machine of any other form it will be suitably shaped to adapt 1t for such connection. -Also,. if it is to be supported freefrom and independent of the printing machine, it may have any .deslred sha e.

s ilpported between and suitably connected to the frame members 6 and 7 is a supporting plate 11 upon which is mounted the operating mechanism forthe dropper elements. Spaced from this plate 11 and supported by the frame members 6 and 7, is a cover plate 12 which, as shown in Fi 3, is detachably secured in place. In the orm of device shown on sheets 1 and 2 a pivot member 13 is supported by the plate 11 and carries the lever 14 of the dropper operating mechanism. This lever has its ends turned downwardly as indicated at 15 and 16. The end 15 is turned laterally to form an extension 17 reaching outwardly beyond the side of the frame. with means 18 for the reception of a locking mechanism adapted to hold the slidable element 19 in properly adjusted position. In the form shown, the locking mechanism comprises a ball 20 forced into engagement with the depressions 18 by means of a spring 21. The opposite end of member 19 ,passes through a perforation in the arm 16 and is guided thereby. It will be obvious from the foregoing that a pull or push will dislodge the locking member 20, permitting member 19 to slide longitudinally and permitting end 22 thereof to engage with lugs 23. These lugs are carried by a reciprocatory element 24 which serves as operating means for oscillating lever 14 upon its pivot 13. The link 24 rests in and rides upon the roller or pulley 25 carried by the end of lever 14. It will thus be supported in proper position and will not drop, down because it rests upon the pulley. The-latter is rotatable upon the shaft 26 carried by the end 16 of the lever. It will be seen by reference to Figs. 3 and 7 that each timethe link 24 oscillates there is a certain amount of lost motion between the end 22 and the lugs 23 and that the amount of this lost motion and the place where it o curs in the cycle of the This extension is provided.

of lever 14 to one side or the other of the central position shown in Fig. 3. Regula-v tion in this manner will also regulate the reciprocation of the links 29 which are connected to the movable portion 33 of the dropper elements 2 and 3. One end of each of members 14 and 19 is movably supported by means of the bracket 34 secured to the frame member 6.

In the construction shown in Fig. 7 a frame 35 is suitably secured upon the frame of the printing machine with an opening in axial alignment with shaft 36. A gear 37 is rigidly but adjustably secured to the shaft 36 and engages a gear 38 mounted u on a stub shaft 39 carried by the plate or rame 35. A pin 40 projects from the gear 38 and has one end of a link 41 connected thereto, the other end of this link being connected at 42 to a crank arm 43. The latter is connected through a shaft 44 with another crank arm 45 which is in turn connected in suitable manner with the link 24. It will thus be seen that as the drum 46 of the printing machine rotates, the shaft 36 also rotates and causes corresponding motion of the gear 38 which transmits reciprocatory motion to the link 41, thereby oscillating the crank 43, 44, and 45. This in turn reciprocates the link 24 resulting in oscillation of the lever 14 which, as pointed out in connection with Fig. 3 osclllates the dropper elements 2 and 3.

The construction and operation of the device shown in- Fig. 13 is similar to that described in connection with Fig. 7 though there are some slight differences. One of these differences is the mode of adjusting the amount and limits of oscillation of the dropper elements 2 and 3. In the construction shown in Fig. 13, collars 47 are adjustably mounted upon link 41 and can be so set that there is lost motion between these .collars and the collar 48 which is pivotally about its pivot 52 and this causes reciprocation of the slide 53 carrying the racks 54 and 55. These latter cooperate with the gears 56 carried by the upper ends of the shafts 30. Preferably gears 56 are integral with the shafts, as shown in Fig. 9, though they may be secured thereto, if des red.

From this it will be seen that oscillation of the sector 51 and reciprocation of the plate 53 will cause oscillation of the gears 56 and ofthe movable sections 2" and 3 of the dropper elements 2 and 3.

As stated above, the shafts 3O fit closely within the fixed sleeves 31 but are freely rotatable therein. These shafts are reduced intermediate their ends so as to reduce the amount of friction thereof with said sleeves. The extensions 33 of the sleeves 31 are rigidly secured to the ends 32 of the shafts 30 and are slotted as indicated at 60 to permit the releasing members 61 to turn up inside of the tubes 33. The releasing members 61 are pivoted at 62 to the tubes 33 and are preferably provided with means, such as s rings, to cause them to turn outwardly into the position shown in Fi s. 8 and 9, after theinterleawing sheets 63 lave been pushed upwardly on the tubes until they are above the tops of the releasing elements. Each releasing element is provided adjacent its outer end with an anti-friction roller 64 which, durin operation, engages the under side of the s eets 63. These sheets 63 are provided with key hole shaped perforations 65 and other perforations 66, designed to reduce the resistance of the air to the falling of said sheets. The circular part of the open ings 65 in all of the sheets 63 are aligned so that they will fit on the dropper elements 2 and 3,,but't-he lateral extensions from the circular parts of the holes extend in different directions in adjacent sheets, so that when the releasing elements 61 align with the openings in one sheet, they will be out of alignment with the openings in the next sheet. In order for the next sheet to be released, it will be necessary for the dropper elements to turn through a substantial angle, say 60 degrees. By having the openings in alternate sheets in alignment, it will be' possible by rotary oscillation of the dropper ele ments to release the sheets one at a time. The operation of the apparatus is so timed that an interleaving sheet is dropped from the pack above the table 5 just after the printed sheet comes from the printing mechanism, so that an interleaving sheet will be applied to the printed sheet before delivery of the next printed sheet commences. By having the dropper elements connected up with the printing mechanism so as to operate in timed relation therewith it is always certain that there will be proper dey livery relationship between the printed sheets and the interleaving sheets.

As shown in the drawings, Figs. 1 and 7, the table 5 is inclined a major portionof the distance from the supporting frame member 66 toward the opposite end thereof. Said opposite end is supported by a frame member 67 having a cross bar 68, extending underneath the table, as shown in Figs. 1 and 14. At its opposite end the table 5 has posts 69 rising therefroln upon which are mounted skids 7 0, said skids having their upper edges formed into a thin edge 71 to reduce the amount of friction between the skids and the sheets of paper sliding thereon. I have tried various kinds of skids for the purpose of fpreventing the sheets of paper from dropping prematurely but believe that the type ere shown are best for this purpose. These skids'also assist in reducing the amount of static electricity which collects upon the sheets during the printing operation. With this construction and arrangement, the sheets of paper will, regardless of speed of operation of the machine, slide into place with their forward ends abutting or substantially abutting the posts 7 2 of the file.

The file comprises a plate 73 to which are secured the posts 72 which have notches 74 in their upper ends for convenience in propbe used but the ones shown are believed preferable. In order to serve as a guide, stop, and holding 1621115 for the base 73 of the file, a Z bar 76 may be secured to the upper surface of the table and the edge of the file inserted thereunder as shown in Figs. 1 and 7, when the file is put into place.

In the form of construction shown in Figs. 12 and 13 the table is horizontal or substantially so and the file 73 is long enough to abut against the flange or other equivalent stop member 77. This flange serves as a guide to assist in properly locating the file so that the file pins 72 will line up properly with the dropper pins 3. In this form of construction the frame member 7 has two arms 78 and 79 extending downwardly to form supports for the table. In this construction, the table is rigidly supported by these downwardly extending arms instead of being adjustably supported, as shown in Fig. 7 by the supporting brackets 66 and 67. If it is desired to adjust the table ofthe latter construction, it is only necessary to remove the screws 80, move the brackets 66 and 67 upwardly or downwardly and reinsert the screws in the proper holes to hold the parts in adjusted position. It will be obvious that if the elevation of the table is changed this will change the elevation of the file and, as a con sequence, it will be necessary to have a file with longer or shorter file pins 72.

As shown in Figs. 12 and 13, an extra post 2 is provided in the middle of the space between the posts 2 and 3 as shown in Fig. 7. This is in order to take care of larger sized sheets. It is probable that it will be necessary in the case of legal cap paper and other larger sizes, for example paper used on printing presses, to have the extra supporting member 2 and, perhaps,- even more than one extra dropper may be' needed in order to properly support the interleaving sheets.

In the construction shown in Figs. 14 to 16, a slightly different form, 14?, of actuating lever 14 is pivoted upon pivot 13 which is mounted for oscillatory motion between the plates '11 and 12. The end 16 extends downwardly through a slot in plate 11 in the same manner that end 16 passes through the plate, as shown in Fig. 6, but the opposite end of 14? passes outwardly through a slot in frame member 6 and is then turned downwardly at 15 to serve as supporting means for longitudinally reciprocable r0 1 19 by means of which the drop pers can be connected to or disconnected from the operating mechanism. The end 15 is provided with a perforation 15 through which the rod 19 slides. Any suitable stop member 19, shown in the present instance as a pin passing through the rod 19, may be used to limit the outward movement of this rod, in order to prevent the end 22 from being withdrawn from the perforation in the arm 16. The purpose of this end 22 is the same as that of end 22, shown in Figs. 2, 3 and 6, namely to serve as means for connecting arm 14 to link 2 k and disconnecting it therefrom.

As shown in Fig. 14, a firmer bearing is provided in the plate 11 by securing a flanged sleeve 11 to the plate 11 and mounting the pin 13 therein so that it will rotate freely but without lost motion. This pin carries the extension 13 upon which the lever 14 is mounted. The rod 19 can be offset to carry it past the plug 13", if desired, but it is preferred to form a notch 13 in the end of the plug and pass the rod therethrough as shown in Figs. 14; and 15. The shoulder 19 serves to limit longitudinal movement of the rod 19- in one direction while the means 19 limits its movement in the opposite direction. Any suitable operating handle 19 may be used to actuate this red.

The frame member 67 is preferably removably connected to frame member 7 and may be adjustable or not, as desired. The table supporting arm 68 for supporting the table 5 is preferably integral with member 67*- and may be notched as shown at 68 for the reception of the file plate 73 when it is desired to mount the file in position to receive long interleaving sheets used with large sheets of paper, such as legal cap. A wall 5* extends upwardly along the frame members 67 a distance, to prevent cross currents of air from blowing the sheets of paper and interleaving sheets during operation of the machine and thus minimize the irregular stacking of these sheets which might otherwise result.

A guide plate 5 is provided with a flange 5 which is slotted for the reception of a pivot member 5 upon which the plate is pivoted adjacent the end of table 5 nearest the printing machine. The flange 5 is provided with a slot or perforations for the reception of the securing means 5 and makes it possible to adjust the guide plate 5 inwardly or outwardly, as necessitated by the size of the paper or other considerations. As shown in Fig. 14, it is preferred to have the upper end 5 of this plate turned outwardly to assist in guiding the paper to proper position upon the table 5. In order to properly hold the guide plate 5 in adjusted position, a spring or spring washer can be used in connection with the securmg means 5 to place a tension upon the flange 5 and yet make it possible to rotate this member about the securing means. The plates 5 and 5 substantially prevent currents of air from interfering with the dropping of the sheets.

Dropper pins 2 and 3 such as shown in Figs. 1, 2 and 7 to 9 may be used with this construction, if desired, but I consider it preferable to use with any of these forms dropper pins 2 such as shown in Fig. 16. As shown in this figure, a solid pin 32 has its end reduced at 30 and this end is pivotally secured in a flanged sleeve 31 secured to the plate 11 to furnish a bearing for the rotatable dropper element. A slot is cut in the lower extremity of the pin 32" for the reception of a dropper element 61 pivoted upon the pivot 62. As shown in the dotted line position in F ig. 16 the dropper pin 61 can not rise to a point where it will be over dead center. It will therefore always tend to drop into the full line position shown in this figure when pushed upwardly in applying or removing interleaving sheets. Also, the pivot 62 is by preference passed through the upper portion of the pin 61 so as to place the major portion of the weight of this pin outside of the pivot, thereby increasing the certainty that the pin will drop down into the position shown in Fig. 16. Its downward motion is limited by engagement of one extremity with a shoulder in member 32 as shown clearly in Fig. 16. The lower end of member 32 is reduced as shown at 7 5 for the application of a tube designed to connect the dropper pins with the file pins 72 Within the tube 80 is a plug 81 which is secured in place by any suitable means such as indentations 82 upon opposite sides of the tube. A longitudinally compressible spring 83 is secured to the plug 81, and at its opposite end engages the upper extremity of the file pin 7 2 which fits rather closel the bore of the tube 80.

Or inarily a group of 100 interleaving sheets after the general plan of those illustrated in Figs. 10 and 19 will be mounted upon a file, with the file pins 72 or 72 passing through the openings 65. If a construction. such as that shown in Fig. 16 is being used, the tubes 80 will be placed upon the file pins 72 and the file placed on the table 5 with the upper ends of the tubes 80 in proximity to the lower ends of the dropper pins 32*. The springs 83 will then be compressed by depressing the tubes 80 until their upper extremities will pass under the lower ends of the pins 32. The ends of these plns are somewhat beveled and the upper, ends of the tubes are preferably reamed out somewhat in order to enable one to get these parts to fit together easily. When the tubes are underneath the pins, they are permitted to rise under the influence of the sprlngs 83 and the parts will then be held in position until disconnected by depressin the tubes 80, when the file may be remove When it is desired to use longer sheets, such as legal cap paper, the file plate 73 may i be inserted in the opening 68 and the pins 80 placed on the file pins 72, The openings 84, shown in Fig. 18, in sheet 63 will then receive the tubes 80 and hold the interleaving sheets in proper alignment, after they have dropped from the dropper elements 2 which are received by the openings 65, as described above in connection with Fig. 10. This will insure that the interleaving sheets will drop to the file in proper position and will be caused tostack up with the printed sheets in such a way as to prevent offsetting.

The skid shown in Fig. 17 is similar to the skid shown in Fig. 4 having a tiltable member similar to the member 70 described above. This member is carried on'a post 69 which is preferably straight instead of angular as shown in Fig. 4. This post is mounted in a'generall U-shaped member 85 and is preferabl a justable therein to vary the height of t e skidwith relation to member 85, though not so shown in the drawing. A resilient member 86 serves to hold member 85 upon a cross member of the duplicating machine frame. These skids are adjustable longitudinally of this cross member in order that they may be properly located with respect to the interleaving sheets and the printed matter bein delivered by the machine. The members 0 and 70" are adjustable to accommodate for difl'erent kinds of work. For example, the skids will be inclined upwardly away from the printing machine as shown in Fig. 17 when sheets of paper are being run through the machine and sent out to the receiving table. These skids contact with the printed sheets and assist in removing static. Also, they serve to prevent the sheets from dropping too soon and clogging up the delivery end of the machine. hen postals or post cards are to be run through the machine, the outer extremity of member 70 mustbe lowered as shown in Fig. 4 in order to permit the cards to drop closely adjacent this arrangement, the file will be placed close to the printing machine with the file pins 72 and tubes 80 in alignment with the first set of dropper elements, that is, the dropper elements corresponding to elements 2 of Figs. 1 and 7.

In the construction shown in Figs. 19 and- 20 holes 90 and 91 are provided in alternate sheets, said holes being out of alignment with each other. That is, all the holes 90 in one set of alternate sheets will be in alignment, while all the holes 91 in the other set of alternate sheets will be in alignment with each other but out of alignment with 90. The purpose of this is in order that air entering between the sheets as the bottom sheet starts to drop will have a tendency to force the bottom sheet away from the one above it on account of the air striking the top surface of the bottom sheet as it comes through the hole in the sheet above. While it is not possible for a great deal of air to pass between the sheets suspended on the pins, there is, nevertheless, a certain space between these sheets and consequently a certain movement of air therein. This space arises primarily from the fact that, in punching the holes in the sheets, a burr is formed on one side of the sheets, around the holes. This spaces the sheets slightly from each other, as well as spacing the bod of the sheets away from the wet ink upon t e rinted surface.

When the guide p ate 5 is used, it will be found more convenient to have the indexing notch 83 placed adjacent the opposite end from that shown in Fig. 10, as illustrated in Figs. 19 and 20. The reason for this is that the guide plate 5 is not long enough to reach the notches 83 in the location here shown but would obscure the view thereof in the position shown in Fig. 10.

The interleaving sheets are preferably notched along their edges as shown at 82 in order to make it possible to easily grasp the edges of the printed sheets and draw them out from between the interleaving sheets. It is thus possible to remove the printed sheets from the file without disturbing the arrangement of the interleaving sheets thereon. The interleaving sheets are also, with the exception of every tenth sheet, notched as shown at 83 and the unnotched sheets have numerals printed thereon to ren- I the printing machine. In

der it easy to count the number of sheets which have already been printed. Thus, if desired to print 35 sheets, the entire stack of interleaving sheets may be placed, on the dropper pins2 and 3, if the sheets are numbered from the bottom of the stack, and then the machine be operated until the numbers indicate 30 and 5 additional sheets have been added to the stack. On the other hand, if the sheets are numbered from the top down, 35 interleaving sheets may be placed upon the dropper pins and then the machine operated until all of the sheets have been dropped from those pins. In either event the same result is attained and this method of operation will save the trouble of counting the sheets individually as they are drop or stopping the machine to count them w en it is thought that a suflicient number of copies have been made.

Operation.

It will be apparent from the foregoing description taken in connection with the attached drawings, that as the printing machine is operated the driving mechanism will also be actuated and will oscillate the dropper elements about their vertical axes thereby causing the rollers 64, carried by pins 61, or the pins 61 to travel around on the under-surface of the sheets 63 until they come in alignment with the holes 65 in the bottom sheet 63 or 63. This sheet will then be released and will drop to the table below, being guided by the file pins 72 or tubes and held 1n proper position upon the file. Since the holes in alternate sheets are out of alignment with the holes of the intermediate sheets, it will be apparent that but a single sheet can be dropped at a time, the remainin sheets being supported by the dropper e ements and the bottom sheet of the suspended pile being ready to be dropped upon the next oscillation of the dropper elements. In order to prevent the first printed sheet from coming in contact with the bar 76, when this form of construction is used, the bottom interleaving sheet will be so cut that it will not remain on the dropper elements when the interleaving sheets are removed from the file and moved upwardly into position on the elements 2 and 3. This can be accomplished by providing said bottom sheet with cut-out portions corresponding to the cut-out portions of two adjacent sheets, so that it will dropwhen elements 61 are in either extreme position corresponding to the two dropping positions.

It will of course be understood that the structure herein more or less specifically described may be departed from without departing from the spirit of my invention as set forth in this specification and the appended claims.

erate with the oscillator Having now described my invention,

I claim:

1. In interleaving mechanism for use with printing-mechanism to insert offset preventing sheets between printed sheets delivered by the printing mechanism, pendulant means to pass through perforations in and suspend the interleaving sheets above the location where the printed sheets are dropped by the printing mechanism, means to be actuated to permit said interleaving sheets to be dropped, one at a time, and means to actuate the last named means to cause the dropping of said sheets.

2. An interleaving file for use in an interleaving machine, comprising a supporting base, posts rising therefrom, and a plurality of interleaving sheets perforated to reduce air resistance in falling and for the reception of suspending members whereby the sheets may be suspended above the base, the perforations for the reception of the suspending members being of non-circular form and adapted to co-act with the suspending members in causing the sheets to be released one at a time.

3. In interleaving mechanism, a supporting frame, posts depending therefrom on which interleaving sheets may be suspended, said posts having a section thereof oscillatory about their longitudinal axes and having a lateral projection adjacent their lower extremities for suspending said sheets, and

.means to oscillate said post sections whereby to release the sheets so they may be dropped one at a time.

4. In interleaving mechanism, a plurality of dropper pins and means for oscillating them in unison, each pin including a fixed section and an oscillatory section, the latter section forming an extension of the former, a part of the oscillatory section extending through the fixed section whereby the oscillatory section may be operated, and means for oscillating the movable section.

5. In an interleaving machine, a file having a supporting base, file pins rising therefrom, and hollow extensions adapted to slide over the pins and substantially enclose them, said pins and extensions having means cooperating therewith to cause partial separation thereof.

6. In interleaving mechanism, a frame work, a top supported thereby, oscillatory pins depending from the top, and a file below the top, said file having pins to cooppins to receive and guide interleaving s eets dropped by the oscillatory pins.

7. In interleaving mechanism, a frame work, a top supported thereby, oscillatory pins depending from the top, an oscillatory lever carried by the top and actuating the pins, and a file below the top, said file having pins to cooperate with the oscillatory pins to receive interleaving sheets dropped y the oscillatory pins.

8. ha structure of the character indit cated, a frame work, a top supported thereby, a pivot mounted in th ried by the pivot, and dropper pins carried by the top andoscillated by the lever.

9. In a-structure of the character indicated, a frame work, a top by, a pivot mounted in the top, a lever car-'- ried by the pivot dropper 1pins carried by the top and oscillated by t e lever, means for transmitting motion to the lever, and means for disconnecting the lever from the power transmitting means.

10. In interleaving mechanism, a suspending a in, comprising a supporting member, a ho y member supported t ereby and rotatable about its longitudinal axis, and a ivoted element mounted upon a pivot pm exe top, a lever carsupported thereof perforated sheets mounted on but part of the perforations tending transversel through the body memr, said pivoted e ement ing mounted to urn up into a slot in the body member and being adapted to turn out of said slot,

eely, on account of its weight, when released for motion.

11, In an interleaving file, a sup orting base, file pins rising therefrom, a p urality the file pins and having said pins extending through some of the perforations in the sheets, said sheets being divided into two groups of alternate sheets, the perforations in alternate sheets being aligned with eachvother of each group being out of alignment with all perforations in the other group.

In witness whereof, I hereunto subscribe my name to this specification.

FRANK H. SHINN. 

